Things I liked: Way better than cartridges.
Things I would have changed: Use braided metal lines and highest quality fittings available.
What others should know: First one leaked right away. Second held up for a while, but leaked at threads, extra teflon tape fixed that. Now, it's leaking in the fitting,, I can't fix that. For this much $$ you'd hope they pressure test these things first. If it leaks, it's useless.